Schwalbe SCH11101024 Marathon Plus 27.5 X 2.1" MTB Tyre :: £37.80 :: Components. :: Tyres - ATB Off Road Rigid; 27.5 inch (650B). :: For Hand built bike wheels & all your cycling needs!
Top Five Gravel Tires: 2019 - Riding Gravel
Should you run 700c or 650b wheels for gravel riding? - Canadian Cycling Magazine
Best winter gravel bike tyres: ADVNTR reviewed - ADVNTR.cc
Reviewed: Bombtrack Hook EXT Gravel Bike - Cyclocross Geometry with 2.1" Tires